Stay Ahead of Cyber Threats – Daily Security Insights, Powered by AI
Play is a new ransomware that takes a page out of Hive and Nokoyawa’s playbook. The many similarities among them indicate that Play, like Nokoyawa, are operated by the same people.
In July, we investigated a spate of ransomware cases in the Latin American region that targeted government entitles, which was initially attributed to a new player known as Play ransomware.…
Following the recent Twilio hack leading to the leakage of 2FA (OTP) codes, cybercriminals continue to upgrade their attack arsenal to orchestrate advanced phishing campaigns targeting users worldwide. Resecurity has recently identified a new Phishing-as-a-Service (PhaaS) called EvilProxy advertised in the Dark Web. On some sources the alternative name is Moloch, which has some connection to a phishing-kit developed by several notable underground actors who targeted the financial institutions and e-commerce sector before.…
Earlier this year, [redacted] encountered a relatively new ransomware threat actor that called themselves BianLian. We observed the actor deploying custom malware that was written in the Go programming language, which posed some initial, but not insurmountable, reverse-engineering challenges.
BianLian used subtle techniques to exploit, enumerate, and move laterally in victim networks to remain undetected and aggressively worked to counter Endpoint Detection & Response (EDR) protections during the encryption phase of their operations.…
Stealing information is fundamental to cybercriminals today to scope and gain access to systems, profile organizations, and execute bigger payday schemes like ransomware. Information stealer malware families including Prynt Stealer are often configured through a builder to facilitate the process for less sophisticated threat actors. However, Zscaler ThreatLabz researchers have uncovered the Prynt Stealer builder, also attributed with WorldWind, and DarkEye, has a secret backdoor in the code that ends up in every derivative copy and variant of these malware families.…
Corporate espionage, also known as industrial espionage, is espionage conducted for commercial or financial purposes. One of the common misconceptions is that espionage is affecting only large corporations or government entities, but it is more common than expected. In this article, we provide an analysis of one such exfiltration and explain why these attacks are on the rise. …
Mitiga spotted a sophisticated, advanced business email compromise (BEC) campaign, directly targeting relevant executives of organizations (mostly CEOs and CFOs) usingOffice 365. The attackers combine high-end spear-phishing with an adversary-in-the-middle (AiTM) attack to circumvent multi-factor authentication (MFA) and a Microsoft 365 design flaw that allows them to create access persistency with MFA.…
Key points
The Black Hat network is more unique and complex than a standard enterprise network due to the number and diversity of devices connected, the abundance of trainings and labs that occur, and the rapid nature of the engagement itself. Over the course of the conference, our IronDefense NDR solution generated 31 malicious alerts and 45 suspicious alerts, detecting both real malware activity and simulated attack tactics from classes and demos.…IP;C&C domains
45[.]76[.]80[.]199;twiiio-sso[.]com, box-okta[.]org, kucoin-pin[.]com, boxokta[.]com, kucoin-sso[.]com 66[.]42[.]107[.]233;slack-mailchimp[.]com 45[.]32[.]66[.]165;microsoft-sso[.]net, sendgrid-okta[.]org, mlcrosoft[.]info, mlcrosoft[.]cloud 45[.]76[.]238[.]53;ouryahoo-okta[.]org, ouryahooinc-okta[.]com 155[.]138[.]240[.]251;sykes-sso[.]com, internai-customer[.]io, ouryahoo-okta[.]com, ouryahoo-okta[.]net, techmahindra-sso[.]com 149[.]28[.]37[.]137;qualfon-sso[.]com, twiiio[.]net, twiiio[.]org, teleperformanceusa-sso[.]com, tmo-sso[.]net, okta-sso[.]net 149[.]248[.]1[.]50;att-mfa[.]com, att-rsa[.]com 108[.]61[.]119[.]20;mcsupport-okta[.]com, mailgun-okta[.]com, sprint-idg[.]net 149[.]28[.]212[.]53;tmobie[.]net 140[.]82[.]63[.]209;kucoinpin[.]com, kucoinpin[.]net, twiiio-okta[.]net 144[.]202[.]82[.]47;kucoin-pin[.]net, kucoin-sso[.]net 45[.]63[.]39[.]116;telus-sso[.]com 149[.]248[.]62[.]54;rogers-rci[.]net, rogers-ssp[.]com, iqor-duo[.]net, iqor-portal[.]com, cgslnc-okta[.]com, conexusonline[.]com, klaviyo-sso[.]com 66[.]42[.]91[.]138;arise-okta[.]com 216[.]128[.]141[.]52;rogers-rci[.]com,…
A malicious campaign spreading the information stealer, AgentTesla, began circulating mid-August. The bad actors behind the campaign are going after information about victims’ computers and login credentials stored in browsers.
Phishing emails, sent from spoofed email addresses, with a malicious attachment are being sent to businesses across South America and Europe.…
Summary
Actions for ZCS administrators to take today to mitigate malicious cyber activity:
• Patch all systems and prioritize patching known exploited vulnerabilities.
• Deploy detection signatures and hunt for indicators of compromise (IOCs).
• If ZCS was compromised, remediate malicious activity.
Updated November 10, 2022: This product was written by the Cybersecurity and Infrastructure Security Agency (CISA) and the Multi-State Information Sharing and Analysis Center (MS-ISAC) with contributions by the Federal Bureau of Investigation (FBI).…
During a routine threat hunting exercise, Cyble Research Labs (CRL) came across a Twitter post wherein researchers mentioned a URL that hosts a Windows executable payload with the name systemupdate.exe. The researcher in the Twitter post claims this Windows executable is a variant of Typhon stealer malware delivered via a crafted .lnk…
日本語 (Japanese)
Update HistoryDate Description of UpdatesAug. 10th 2022Adding clarifying details on activity involving active directory.Aug. 10th 2022Update made to the Cisco Response and Recommendations section related to MFA. Executive summaryOn May 24, 2022, Cisco became aware of a potential compromise.…RedLine is a stealer distributed as cracked games, applications, and services.
The malware steals information from web browsers, cryptocurrency wallets, and applications such as FileZilla, Discord, Steam, Telegram, and VPN clients. The binary also gathers data about the infected machine, such as the running processes, antivirus products, installed programs, the Windows product name, the processor architecture, etc.…
In this blog, the Qualys Research Team explains the mechanics of a Linux malware variant named BPFdoor. We then demonstrate the efficacy of Qualys Custom Assessment and Remediation to detect it, and Qualys Multi-Vector EDR to protect against it.
BPFDoor is a Linux/Unix backdoor that allows threat actors to remotely connect to a Linux shell to gain complete access to a compromised device.…
Amadey Bot, a malware that was first discovered in 2018, is capable of stealing information and installing additional malware by receiving commands from the attacker. Like other malware strains, it has been sold in illegal forums and used by various attackers.
The ASEC analysis team previously revealed cases where Amadey was used on attacks in the ASEC blog posted in 2019 (English version unavailable).…
During a routine threat-hunting exercise, Cyble Research Labs came across a post on Telegram selling an information stealer malware called “NoMercy stealer.” The malware developer is currently selling the stealer for 780 Indian rupees or 10 USD, indicating that the stealer is developed primarily for Indian Threat Actors (TA).…
Summary
The Federal Bureau of Investigation (FBI), Cybersecurity and Infrastructure Security Agency (CISA), and the Department of the Treasury (Treasury) are releasing this joint Cybersecurity Advisory (CSA) to provide information on Maui ransomware, which has been used by North Korean state-sponsored cyber actors since at least May 2021 to target Healthcare and Public Health (HPH) Sector organizations.…
This blog post was authored by Jérôme Segura
We have seen and heard less buzz about ‘Magecart’ during the past several months. While some marketing playbooks continue to rehash the same breaches of yesteryear, we have been wondering if some changes took place in the threat landscape.…
June 15, 2022
by Steven Adair, Thomas Lancaster, Volexity Threat Research
Volexity frequently works with individuals and organizations heavily targeted by sophisticated, motivated, and well-equipped threat actors from around the world. Some of these individuals or organizations are attacked infrequently or on an irregular basis, while others see a barrage of attacks nearly every week.…
In this report, we investigate the reasons that the DeadBolt ransomware family is more problematic for its victims than other ransomware families that previously targeted NAS devices.
By Stephen Hilt, Éireann Leverett, Fernando Mercês
The DeadBolt ransomware kicked off 2022 with a slew of attacks that targeted internet-facing Network-Attached Storage (NAS) devices.…